automatic update page

* It shows that the page is updated without any action of users or refresh.

see here

Dom tutorial (update, create, idelete....)

tutotial site

look at the sample

Dom parsing as loop

This is an example how we can parse xml file with using loop method.

see here

Map example

import java.util.*;

public class HashMapTest
{
public static void main(String argv[])
{
HashMap hm = new HashMap();
System.out.println(hm.put("aaa", "111"));
System.out.println(hm.put("bbb", "222"));
System.out.println(hm.put("aaa", "444"));
System.out.println(hm.put("ccc", "333"));
System.out.println(hm.put("ccc", null));

System.out.println("HashMap size : " + hm.size());

Set set = hm.keySet();
Object []hmKeys = set.toArray();
for(int i = 0; i < hmKeys.length; i++)
{
String key = (String)hmKeys[i];
System.out.print(key);
System.out.print(" - ");
System.out.println((String)hm.get(key));
}
}
}


/**
run:java HashMapTest
output:
null
null
111
null
333
HashMap size : 3
ccc - null
bbb - 222
aaa - 444

List example

import java.util.List ;
import java.util.Vector ;

public class A {

public static void main(String[] args) {
A a = new A() ;
List b = a.getSchools() ;

// get values
for( int i = 0 ; i < b.size() ; i++ ){
String str = (String)b.get(i) ;
System.out.println("["+i+"]:"+str) ;
}

System.out.println("=================================") ;

// add the value as the last position
b.add("SchoolName4") ;
b.add("SchoolName5") ;

// get values
for( int i = 0 ; i < b.size() ; i++ ){
String str = (String)b.get(i) ;
System.out.println("["+i+"]:"+str) ;
}

System.out.println("=================================") ;

// insert value to 3 position
b.add(2, "SchoolName6") ;

// get values
for( int i = 0 ; i < b.size() ; i++ ){
String str = (String)b.get(i) ;
System.out.println("["+i+"]:"+str) ;
}


}

private List getSchools() {

Vector v = new Vector() ;
v.add("SchoolName1") ;
v.add("SchoolName2") ;
v.add("SchoolName3") ;
return (List)v ;

}

}